CN211663801U

CN211663801U - Full-plastic emulsion pump

Info

Publication number: CN211663801U
Application number: CN202020205334.3U
Authority: CN
Inventors: 祝广伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-02-25
Filing date: 2020-02-25
Publication date: 2020-10-13
Anticipated expiration: 2030-02-25

Abstract

The utility model discloses a full-plastic emulsion pump, which comprises a body made of plastic materials, a screw thread, a press head, a main column, a suction pipe, a plastic spring, a pull rod, a plug, a lock cover, a first one-way valve device and a second one-way valve device, wherein the main column is connected with the press head, the plastic spring is positioned in the body and is used for jacking the main column upwards, the plastic spring is communicated with the inlets of the main column and the body and forms a channel for liquid flowing, a communicating port is arranged between the plastic spring and the main column, the pull rod is positioned in the plastic spring and passes through the communicating port, the plug is connected at the upper end of the pull rod, when the plastic spring is pressed downwards, a gap is formed between the side wall of the pull rod and the communicating port, when the plastic spring bounces, the plug plugs the communicating port to be sealed, the first one-way valve device is arranged between the press head and the main column for the emulsion in the main column to flow to the press head, the second one-way valve device is arranged between the plastic, environmental protection and safety, and is convenient for recovery.

Description

Full-plastic emulsion pump

[ technical field ] A method for producing a semiconductor device

The utility model relates to a plastic emulsion pump.

[ background of the invention ]

At present, the emulsion pump on the market mainly comprises a press head (or elbow), a lock cover, a metal spring, a screw tooth cover, a body, a main column, a piston, a secondary column and a glass ball, for example, the emulsion pump is described in patent No. 201020679937.3 published in Chinese patent literature, the emulsion pump comprises the press head, the lock cover, a gasket, a spring, the screw tooth cover, the body, the main column, the piston, the secondary column, the glass ball and a suction pipe, an inner cylinder in the middle of the press head is connected with the upper part of the main column, an outer cylinder in the middle of the press head is annularly sleeved on a cylinder on the upper part of the screw tooth cover, the screw tooth cover is connected with the lock cover, threads matched with a bottle mouth are arranged on the inner wall of the screw tooth cover, two ends of the spring are respectively pressed on the main column and the lock cover, and the spring is positioned on an. The emulsion pump with the composition structure has the advantages that as the emulsion pump contains the metal spring, the emulsion pump can hardly meet the environmental control standards of foreign countries, particularly European and American markets; one emulsion pump simultaneously contains plastic, metal and glass parts, and the emulsion pump needs to be disassembled for classified recovery during recovery, which is not beneficial to the recovery of products. In addition, the piston is used, the inner cavity of the body is used as a pump cavity for the piston to move up and down, the emulsion enters the inner cavity of the body from the suction pipe through the glass ball and enters the main column through the piston and the auxiliary column to flow out from the pressing head, and in an initial state, a small amount of lubricating liquid which does not conflict with the performance of the emulsion needs to be injected to lubricate the piston so that the piston can move in the inner cavity of the body smoothly when the piston is used.

The present invention is made based on such a situation.

[ Utility model ] content

The utility model aims to solve the technical problem that a plastic emulsion pump is provided, all parts of this emulsion pump all adopt the plastic material to make, easily satisfy the environmental protection requirement of high standard, and it is convenient to retrieve, need not to use lubricated liquid.

In order to solve the technical problem, the utility model relates to a plastic emulsion pump which characterized in that: the plastic spring is a plastic spring tube with an opening at the upper end and a sealed side surface, the upper end of the plastic spring is communicated with the main column, the lower end of the plastic spring is communicated with the inlet of the body, so that the plastic spring forms a channel which connects the main column and the inlet of the body and is used for liquid flowing, a communicating port which communicates the plastic spring and the main column up and down is arranged between the plastic spring and the main column, a pull rod which is arranged at the inner side of the plastic spring is arranged in the body, the pull rod is vertically corresponding to the communicating port, and can penetrate out from the communicating port when the plastic spring is pressed down and forms a gap with the side wall of the communicating port, the upper end of the pull rod is provided with a plug positioned above the communicating opening, the plug can press the communicating opening from the top to pull the plastic spring and the main column downwards when the plastic spring bounces and plug and seal the communicating opening, a lock cover which can limit the plastic spring in the body is arranged at the upper port of the body, a first one-way valve device which can supply the emulsion in the main column to flow to the press head and prevent the emulsion in the press head from flowing to the main column is arranged between the press head and the main column, a second one-way valve device which can allow the emulsion to flow into the plastic spring from the inlet of the body and prevent the emulsion in the plastic spring from flowing out of the inlet of the body is arranged between the plastic spring and the inlet of the body, the body, the screw threads, the press head, the main column, the suction pipe, the plastic spring, the pull rod, the plug, the locking cover, the first one-way valve device and the second one-way valve device are respectively made of plastic materials.

The all-plastic emulsion pump is characterized in that: the lock cover is sleeved on the outer side of the main column, and a waterproof sleeve used for blocking a gap between the upper end of the lock cover and the main column is arranged between the lock cover and the main column.

The all-plastic emulsion pump is characterized in that: the plastic spring is connected with the main column in a buckling manner and can prevent the plastic spring and the main column from being separated up and down.

The all-plastic emulsion pump is characterized in that: the upper end of the plastic spring is provided with an annular buckling part inserted into the main column from the lower port of the main column, the outer side surface of the buckling part is hermetically connected with the inner side surface of the main column, the communication port is formed in the plastic spring and located on the inner side of the buckling part, a second buckling ring protrudes from the outer side of the buckling part, and the inner wall of the main column is provided with a second buckling groove which is concave and is buckled with the second buckling ring.

The all-plastic emulsion pump is characterized in that: the upper end of the plastic spring is located on the outer side of the buckling part and is provided with an annular end face which can be in sealing fit with the lower end face of the main column, and when the main column is pressed downwards, the lower end face of the main column is pressed on the annular end face and forms sealing between the two end faces.

The all-plastic emulsion pump is characterized in that: the lower end inner holes of the buckling part and the main column are circular, the second buckling ring and the second buckling groove are corresponding in ring shape, the main column can rotate relative to the plastic spring under the action of external force, a guide structure used for guiding the main column to move up and down is arranged between the locking cover and the main column, and the guide structure is staggered when the main column rotates relative to the locking cover and prevents the main column from moving up and down.

The all-plastic emulsion pump is characterized in that: guide structure is including setting up the guide way on the locking closure, be equipped with the guide post of direction about cooperating with the guide way on the principal post, one side of the upper end of guide way is equipped with the locking groove that the indent can supply the guide post to rotate out the back card to go out from the guide way after the principal post bounces, the tank bottom of locking groove is located the below of guide post and restricts the guide post downstream.

The all-plastic emulsion pump is characterized in that: the first one-way valve device comprises a first valve core, a main column outlet communicated with the press head is arranged in the main column, the first valve core comprises a first outer ring fixed between the press head and the main column, a first inner core which is isolated from the first outer ring and covers the main column outlet from one side of the press head is arranged on the inner side of the first outer ring, and the first outer ring and the first inner core are elastically connected through a first rib and enable the first inner core to float upwards when the bottom of the first inner core is pressed, so that the main column outlet is opened.

The all-plastic emulsion pump is characterized in that: the plastic spring body is characterized in that a sealing seat for hermetically connecting the plastic spring body and the body is arranged between the plastic spring body and the body, the lower end of the pull rod is fixed on the sealing seat, a bottom cavity is arranged at the bottom of the sealing seat, a through hole for communicating the plastic spring body with the bottom cavity is formed in the sealing seat, and the bottom cavity is communicated with an inlet of the body.

The all-plastic emulsion pump is characterized in that: the second one-way valve device comprises a second valve core, the second valve core is located in the bottom cavity and comprises a second outer ring fixed between the sealing seat and the body, a second inner core which is isolated from the second outer ring and covers the inlet of the body from one side of the bottom cavity is arranged on the inner side of the second outer ring, and the second outer ring and the second inner core are elastically connected through a second rib and enable the second inner core to float upwards when the bottom of the second inner core is pressed so as to open the inlet of the body.

The all-plastic emulsion pump is characterized in that: the lock cover is located the top of plastic spring to when plastic spring bounced, block plastic spring and inject the maximum height that plastic spring bounced from the top, plastic spring bounced the roof pressure and was in compression state when the lock was covered, plastic spring lower extreme roof pressure is on the seal receptacle and with the seal receptacle roof pressure in the inner chamber bottom of body, be equipped with the lower extreme male seal groove that supplies plastic spring on the seal receptacle, plastic spring's lower terminal surface is pressed on the tank bottom of seal groove and is sealed with the tank bottom of seal groove and laminates, under plastic spring's suppress, the bottom surface of seal receptacle closely laminates in the inner chamber bottom of body and forms sealedly bottom the inner chamber of bottom surface and body at the seal receptacle.

Compared with the prior art, the utility model discloses there is following advantage:

1. the utility model discloses a plastic emulsion pump, each part of constituteing this emulsion pump all adopt the plastic material to make, can satisfy the environmental protection requirement of high standard better, and it is convenient to retrieve moreover, need not to unpack apart the part back reclassification recovery again, need not to use the piston and to the lubricated liquid of piston.

2. The utility model adopts a brand-new structure, and the tubular plastic spring with sealed side surface is arranged below the main column, the main column is connected with the inlet of the body through a plastic spring to form a channel for emulsion to flow from the inlet of the body to the main column, a first one-way valve device is arranged between the pressing head and the main column, a second one-way valve device is arranged between the plastic spring and the inlet of the body, a storage cavity for storing emulsion is formed among the main column, the plastic spring, the first one-way valve device and the second one-way valve device, when the press head is pressed down under the action of external force, the plastic spring is compressed and shortened, the storage cavity is small in volume, the internal pressure is large, pressure difference is formed between the storage cavity and the outside, and the emulsion flows to the press head from the storage cavity through the first one-way valve device and flows out from the press head due to the fact that the first one-way valve device and the second one-way valve device are of one-way flow structures. When external force is released, the main column and the press head are jacked up under the elastic force of the plastic spring, the plastic spring is expanded and lengthened, the volume of the storage cavity is enlarged, the internal pressure is reduced, pressure difference is formed between the internal pressure and the outside, and emulsion flows into the storage cavity from the inlet of the body through the second one-way valve device through the suction pipe, so that the effect of pumping the emulsion is realized. And through the pull rod of plastics spring inboard, set up the stopper in the upper end of pull rod, when plastics spring bounced, press down to pull down plastics spring and principal post on the intercommunication mouth and plug up the intercommunication mouth sealed through the stopper, then when the bottle pressurized deformation, can prevent that the emulsion in the plastics spring from getting into in the principal post through the intercommunication mouth to can prevent that the emulsion flow in the principal post from flowing after pressing the head, the leakproofness is good. The stopper is the back taper structure, and in the lower part can be impressed in the intercommunication mouth, leakproofness stability is better. When the press head is pressed down, the communicating port moves downwards along with the shrinkage of the main column and the plastic spring and is separated from the plug, and the emulsion flows into the main column from the plastic spring through a gap between the pull rod and the side wall of the communicating port.

3. The utility model discloses a locking closure is located the top of plastic spring to when the plastic spring bounces, block the plastic spring and inject the maximum height that the plastic spring bounced from the top, the plastic spring bounces the roof pressure and is in compression state when the locking is covered, plastic spring lower extreme roof pressure is on the seal receptacle and with the seal receptacle roof pressure in the inner chamber bottom of body, be equipped with the lower extreme male seal groove that supplies the plastic spring on the seal receptacle, the lower terminal surface of plastic spring is pressed on the tank bottom of seal groove and is laminated with the tank bottom of seal groove is sealed, under the bullet of plastic spring, the bottom surface of seal receptacle closely laminates in the inner chamber bottom of body and forms sealedly with the inner chamber bottom of body in the bottom surface of seal receptacle. Because the plastic spring is in the compression state of different degrees in the bounce state and the pressing state and in the bounce and pressing processes, the sealing seat can be always pressed at the bottom of the inner cavity of the body, the sealing seat is always in sealing connection with the body, and the lower end face of the plastic spring is always pressed at the bottom of the sealing groove in sealing connection. And because the plastic spring is pressed between the lock cover and the sealing seat in a bouncing state, the friction force which needs to be overcome by the rotation of the plastic spring and the sealing seat is large, and when the press head and the main column are rotated, the main column can rotate relative to the plastic spring, so that the rotation of the plastic spring and the sealing seat is avoided.

4. The plastic spring in the utility model is in a compressed state after being bounced, so that the position of the press head and the main column after being bounced is stable; the other can make the plastic spring bounce, the pull rod and the plug tightly pull the communication port to ensure sealing; when the bottle is deformed under pressure and the pressure in the inner cavity of the plastic spring is increased, the lock cover shares the pressure of the upward expansion of the plastic spring, so that the overlarge tension of the pull rod and the plug at the communication port is avoided.

[ description of the drawings ]

The following detailed description of embodiments of the present invention is provided with reference to the accompanying drawings, in which:

FIG. 1 is a sectional view of the all-plastic lotion pump of the present invention in a state where the button is flipped up;

FIG. 2 is a sectional view of the all-plastic lotion pump according to the present invention in a state of pressing the button;

FIG. 3 is a schematic structural view of a plastic spring;

FIG. 4 is a schematic structural view of a seal seat;

FIG. 5 is a schematic of the structure of the first and second spools;

FIG. 6 is a schematic view of the structure of the button;

FIG. 7 is a schematic structural view of a main column;

fig. 8 is a schematic view of the structure of the locking cover.

[ detailed description ] embodiments

The invention will be further described with reference to the accompanying drawings:

as shown in fig. 1 to 8, the all-plastic lotion pump comprises a body 1 and a pressing head 2, wherein the upper end of the body 1 is provided with a screw thread 3 for connecting with a bottle, the lower end of the body 1 is provided with a suction pipe 4 communicated with an inlet 11 at the lower end thereof, the pressing head 2 is connected with a main column 5 inserted in the body 1, a plastic spring 6 capable of jacking the pressing head 2 and the main column 5 upwards is arranged in an inner cavity of the body 1, the plastic spring 6 is positioned below the main column 5 and is hermetically connected with the main column 5, the plastic spring 6 is a plastic spring pipe with an upper end and a lower end opened and a side surface sealed, the upper end of the plastic spring 6 is communicated with the main column 5, the lower end is communicated with the inlet 11 of the body so that the plastic spring 6 forms a channel for connecting the main column 5 and the inlet 11 of the body and providing liquid flow, a communication port 61 for communicating the plastic spring 6 and the main column 5 up and down is arranged between the plastic spring, a pull rod 7 positioned at the inner side of the plastic spring 6 is arranged in the body 1, the pull rod 7 corresponds to the communication port 61 up and down, and can penetrate out of the communication port 61 when the plastic spring 6 is pressed down, a gap is formed between the pull rod 7 and the side wall of the communication port 61, a plug 71 positioned above the communication port 61 is arranged at the upper end of the pull rod 7, when the plastic spring 6 bounces, the plug 71 can be pressed on the communication port 61 from the top to pull the plastic spring 6 and the main column 5 down and plug the communication port 61 for sealing, a lock cover 8 capable of limiting the plastic spring 6 in the body 1 is arranged at the upper end opening of the body 1, a first one-way valve device capable of enabling emulsion in the main column 5 to flow to the press head 2 and preventing emulsion in the press head 2 from flowing to the main column 5 is arranged between the press head 2 and the main column 5, and a second one-way valve device capable of enabling emulsion in the body to flow into the plastic spring 6 from the inlet 11 of the body and preventing emulsion in the plastic spring 6 from flowing The valve device comprises a body 1, a screw thread 3, a press head 2, a main column 5, a suction pipe 4, a plastic spring 6, a pull rod 7, a plug 71, a locking cover 8, a first one-way valve device and a second one-way valve device which are respectively made of plastic materials.

The all-plastic emulsion pump adopts a brand-new structure, and is characterized in that a tubular plastic spring 6 with sealed side surface is arranged below a main column 5, the main column 5 is connected with the inlet 11 of the body through the plastic spring 6 to form a channel for emulsion to flow from the inlet 11 of the body to the main column 5, a first one-way valve device is arranged between the press head 2 and the main column 5, a second one-way valve device is arranged between the plastic spring 6 and the inlet 11 of the body, a storage cavity for storing emulsion is formed among the main column 5, the plastic spring 6, the first one-way valve device and the second one-way valve device, when the press head 2 is pressed down under the action of external force, the plastic spring 6 is compressed and shortened, the storage cavity has a small volume, the internal pressure is increased, and pressure difference is formed between the storage cavity and the outside, and the emulsion flows to the press head 2 from the storage cavity through the first one-way valve device and flows out of the press head 2 because the first one-way valve device and the second one-way valve device are both in one-way flow structures. When the external force is released, the main column 5 and the press head 2 are jacked up under the elastic force of the plastic spring 6, the plastic spring 6 is expanded and lengthened, the volume of the storage cavity is enlarged, the internal pressure is reduced, pressure difference is formed between the internal pressure and the outside, and the emulsion flows into the storage cavity from the inlet 11 of the body through the suction pipe 4 and the second one-way valve device, so that the effect of pumping the emulsion is realized.

And in the pull rod 7 of the inner side of the plastic spring 6, the upper end of the pull rod 7 is provided with the plug 71, when the plastic spring 6 bounces, the plug 71 is pressed on the communicating port 61 to pull the plastic spring 6 and the main column 5 downwards and plug the communicating port 61 for sealing, so that when the bottle is pressed and deformed, emulsion in the plastic spring 6 can be prevented from entering the main column 5 through the communicating port 61, the emulsion in the main column 5 can be prevented from flowing out after flowing to the press head 2, and the sealing performance is good. The plug 71 is of an inverted cone structure, and the middle lower portion of the plug can be pressed into the communication port 61, so that the sealing stability is better. When the push head 2 is pushed down, the communication port 61 moves downward with the contraction of the main column 5 and the plastic spring 6, and is separated from the plug 71, and the emulsion flows from the plastic spring 6 into the main column 5 through the gap between the pull rod 7 and the side wall of the communication port 61.

By adopting the structure, all parts forming the emulsion pump can be made of plastic materials so as to better meet the high-standard environmental protection requirement, and the emulsion pump is convenient to recycle, does not need to disassemble the parts and then recycle in a classified manner, and does not need to use a piston and lubricating liquid aiming at the piston.

8 covers in the main column 5 outsides of locking closure 8, be equipped with the waterproof cover 9 that is used for plugging up the gap between the upper end of locking closure 8 and the main column 5 between locking closure 8 and the main column 5, waterproof cover 9 is made by the plastic material, because locking closure 8 fixes on the body, 8 up-and-down motion of main column 5 relative locking closure can prevent through setting up waterproof cover 9 that outside liquid and debris from getting into body 1 from the gap between the locking closure 8 and the main column 5 two, prevent to pollute the emulsion pump inside.

The plastic spring 6 and the main column 5 are connected in a buckling mode and can be prevented from being separated up and down, and the plastic spring 6 and the main column 5 can be assembled and disassembled conveniently.

The upper end of the plastic spring 6 is provided with an annular buckling part 62 inserted into the main column 5 from the lower port of the main column, the outer side surface of the buckling part 62 is hermetically connected with the inner side surface of the main column 5, the communication port 61 is arranged on the plastic spring 6 and is positioned at the inner side of the buckling part 62, the outer side of the buckling part 62 is protruded with a second buckling ring 63, the inner wall of the main column 5 is provided with a second buckling groove 51 which is concave and is buckled with the second buckling ring 63, and during assembly, the buckling part 62 is spliced with the main column 5 until the second buckling ring 63 is buckled with the second buckling groove 51.

The upper end of the plastic spring 6 is provided with an annular end face 64 which is positioned outside the buckling part 62 and can be in sealing fit with the lower end face of the main column 5, and when the main column 5 is pressed downwards, the lower end face of the main column 5 is pressed on the annular end face 64 and forms sealing between the two end faces. Since the inner pressure of the main column 5 is increased when the pressing head 2 is pressed down, and the lower end surface of the main column 5 is pressed against the annular end surface 64 during the pressing down and forms a seal between the two end surfaces, the main column 5 and the plastic spring 6 have better sealing performance. When the main column 5 is static and bounces, because the internal pressure of the main column 5 is small, the liquid in the main column 5 can be prevented from flowing out from the joint of the main column 5 and the plastic spring 6 by the sealing connection of the outer side surface of the buckling part 62 and the inner side surface of the main column 5.

The lower end inner holes of the buckling part 62 and the main column 5 are circular, the second buckling ring 63 and the second buckling groove 51 are circular correspondingly and enable the main column 5 to rotate relative to the plastic spring 6 under the action of external force, a guide structure for guiding the main column 5 to move up and down is arranged between the lock cover 8 and the main column 5, and the guide structure is staggered when the main column 5 rotates relative to the lock cover 8 and prevents the main column 5 from moving up and down.

Guide structure is including setting up the guide way 81 on the locking closure 8, be equipped with the guide post 53 that leads from top to bottom with the guide way 81 cooperatees on the principal post 5, one side of the upper end of guide way 81 is equipped with the indent and can supply the guide post 53 to rotate out the locking groove 82 that the back card was gone into from the guide way 81 after the principal post 5 bounces, the tank bottom that locks the groove 82 is located the below of guide post 53 and restricts guide post 53 downstream.

When the plastic spring 6 is in the bounce state, the press head 2 and the main column 5 are rotated to enable the main column 5 to rotate relative to the lock cover 8, the guide column 53 rotates out of the guide groove 81 and is clamped in the locking groove 82, the main column 5 cannot move downwards, and when the plastic spring 6 is limited by the lock cover 8, the pull rod 7 and the plug 71 pull the plastic spring 6 and the main column 5 downwards, the main column 5 is limited to move upwards, and the emulsion pump is locked. Of course, since the plastic spring 6 and the main column 5 are connected by buckling, the main column 5 can be pulled out from the plastic spring 6 by force when the external force is large enough.

The first one-way valve device comprises a first valve core 10, a main column outlet 52 communicated with the press head 2 is arranged in the main column 5, the first valve core 10 comprises a first outer ring 101 fixed between the press head 2 and the main column 5, a first inner core 102 which is separated from the first outer ring 101 and covers the main column outlet 52 from one side of the press head 2 is arranged on the inner side of the first outer ring 101, and the first outer ring 101 and the first inner core 102 are elastically connected through a first rib 103 and enable the first inner core 102 to float upwards when the bottom of the first inner core is pressed so as to open the main column outlet 52.

The lower end of the press head 2 is provided with a first positioning groove 21 which is concave and is used for clamping and positioning the first outer ring 101, an annular boss 54 which protrudes towards one side of the press head 2 and presses the first inner core 102 towards one side of the press head 2 is arranged on the outer side of the main column outlet 52 in the main column 5, the annular boss 54 is arranged on the inner side below the first inner core 102, and the annular boss 54 is pressed on the first inner core 102 so as to seal the main column outlet 52. The annular boss 54 protrudes upward and presses the first inner core 102 toward the pressing head 2, so that the first inner core 102 and the annular boss 54 have initial pre-pressure, and the sealing performance of the first one-way valve device is better in the static state and the bouncing process of the main column 5.

The first outer ring 101, the first inner core 102 and the first ribs 103 are integrally formed by elastic plastic materials, preferably rubber materials, and the structure is simple.

The inner wall of the main column 5 is provided with a first concave buckling groove 55, the button 2 is provided with a first buckling ring 22 which is clamped into the first buckling groove 55 and limits the button 2 up and down, the inner side of the main column 5 is provided with an anti-rotation groove 56 along the circumferential direction, and the button 2 is provided with an anti-rotation strip 23 which can be clamped into the anti-rotation groove 56 to prevent the button 2 from rotating relative to the main column 5.

When the press head 2 and the main column 5 are assembled, the first valve core 10 is firstly placed into the first positioning groove 21 at the lower end of the press head 2, the anti-rotation strip 23 is opposite to the anti-rotation groove 56, the press head 2 is inserted into the upper end of the main column 5 until the first buckling ring 22 is buckled with the first buckling groove 55, at this time, the first outer ring 101 is pressed between the press head 2 and the main column 5, and the first inner core 102 is pressed on the annular boss 54, as shown in fig. 2, the structure is simple, and the assembly is convenient.

A sealing seat 70 for sealing and connecting the plastic spring 6 and the body 1 is arranged between the plastic spring 6 and the body 1, the sealing seat 70 is made of plastic materials, the lower end of the pull rod 7 is fixed on the sealing seat 70, a bottom cavity 701 is arranged at the bottom of the sealing seat 70, a through hole 702 for communicating the plastic spring 6 with the bottom cavity 701 is arranged on the sealing seat 70, and the bottom cavity 701 is communicated with the inlet 11 of the body. The lower end of the plastic spring 6 is sealed and the pull rod 7 is fixed through the sealing seat 70, and the structure is simple.

The second one-way valve device comprises a second valve core 20, the second valve core 20 is positioned in a bottom cavity 701, the second valve core 20 comprises a second outer ring 201 fixed between the sealing seat 70 and the body 1, a second inner core 202 isolated from the second outer ring 201 and covering the inlet 11 of the body from the bottom cavity 701 side is arranged on the inner side of the second outer ring 201, the second outer ring 201 and the second inner core 202 are elastically connected through a second rib 203, and the second inner core 202 can float upwards when the bottom of the second outer ring is pressed so as to open the inlet 11 of the body, and the structure is simple.

The second outer ring 201, the second inner core 202 and the second ribs 203 are integrally formed by elastic plastic materials, preferably rubber materials, and the structure is simple and the manufacturing is convenient.

The lock cover 8 is located above the plastic spring 6, and when the plastic spring 6 bounces, the plastic spring 6 is blocked from the top and the maximum height of the plastic spring 6 in bouncing is limited, the plastic spring 6 is in a compressed state when bouncing and pressing on the lock cover 8, the lower end of the plastic spring 6 presses on the seal seat 70 and presses the seal seat 70 at the bottom of the inner cavity of the body 1, the seal seat 70 is provided with a seal groove 703 for inserting the lower end of the plastic spring 6, the lower end face of the plastic spring 6 presses on the bottom of the seal groove 703 and is in sealing fit with the groove bottom of the seal groove 703, and under the elastic pressure of the plastic spring 6, the bottom face of the seal seat 70 is tightly fitted at the bottom of the inner cavity of the body 1 and forms a seal with the bottom of the inner cavity of the body 1 at the bottom face of the seal seat 70. Because the plastic spring 6 is in the compression state of different degrees in the bounce state, the pressing state, and the bounce and pressing processes of the plastic spring 6, the sealing seat 70 can be always pressed against the bottom of the inner cavity of the body 1, the sealing seat 70 is always in sealing connection with the body 1, and the lower end face of the plastic spring 6 is always pressed on the bottom of the sealing groove 703 in sealing connection.

Because the plastic spring 6 is pressed between the lock cover 8 and the seal seat 70 in the bounce state, the friction force which needs to be overcome by the rotation of the plastic spring 6 and the seal seat 70 is large, and when the press head 2 and the main column 5 are rotated, the main column 5 can rotate relative to the plastic spring 6, so that the rotation of the plastic spring 6 and the seal seat 70 is avoided.

Therefore, the independent sealing seat 70 and the plastic spring 6 are adopted, after the plastic spring 6 is inserted into the sealing groove 703 of the sealing seat 70, the pull rod 7 is inserted from the plastic spring 6, the pull rod 7 is inserted on the sealing seat 70, the plastic spring 6 is limited between the sealing seat 70 and the plug 71 to form a whole, and the whole is inserted into the body 1, wherein the side wall of the sealing seat 70 is matched with the side wall of the inner cavity of the body 1, the structure is simple, and the assembly is convenient.

In addition, the bottom of the sealing seat 70 is provided with a second positioning groove 704 for the second outer ring 201 to be clamped and positioned, when the sealing seat 70 is installed in the body 1, the second valve core 20 is placed in the second positioning groove 704, and the second valve core 20 can be fixed above the inlet 11 of the body 1 by pressing through the elastic force of the plastic spring 6.

And the plastic spring 6 is in a compressed state after being bounced, so that the position of the press head 2 and the main column 5 after being bounced can be stable; after the plastic spring 6 is bounced, the pull rod 7 and the plug 71 tightly pull the communication port 61 to ensure sealing; when the bottle is pressed and deformed and the pressure in the inner cavity of the plastic spring 6 is increased, the pressure of the upward expansion of the plastic spring 6 is shared, and the overlarge tension of the pull rod 7 and the plug 71 at the communication port 61 is avoided.

Claims

1. An all-plastic emulsion pump is characterized in that: the plastic spring type liquid pressing device comprises a body (1) and a pressing head (2), wherein the upper end of the body (1) is provided with a screw thread (3), the lower end of the body (1) is provided with a suction pipe (4) communicated with an inlet (11) at the lower end of the body, the pressing head (2) is connected with a main column (5) inserted into the body (1), a plastic spring (6) capable of jacking the pressing head (2) and the main column (5) upwards is arranged in an inner cavity of the body (1), the plastic spring (6) is positioned below the main column (5), the plastic spring (6) is hermetically connected with the main column (5), the plastic spring (6) is a plastic spring pipe with an opening at the upper end and a sealing side surface, the upper end of the plastic spring (6) is communicated with the main column (5), the lower end of the plastic spring is communicated with the inlet (11) of the body, so that the plastic spring (6) forms a channel for connecting the main column (5) and the inlet (11) of, a communication port (61) which is used for communicating the plastic spring (6) and the main column (5) up and down is arranged between the plastic spring (6) and the main column (5), a pull rod (7) which is positioned at the inner side of the plastic spring (6) is arranged in the body (1), the pull rod (7) corresponds to the communication port (61) up and down, and can penetrate out of the communication port (61) when the plastic spring (6) is pressed down, a gap is formed between the pull rod (7) and the side wall of the communication port (61), a plug (71) which is positioned above the communication port (61) is arranged at the upper end of the pull rod (7), the plug (71) can be pressed up on the communication port (61) when the plastic spring (6) is bounced, so that the plastic spring (6) and the main column (5) are pulled down and the communication port (61) is blocked and sealed, a locking cover (8) which can limit the plastic spring (6) in the body (1) is arranged at the upper end opening of the body (1), and a pressing head (2) which can be used for the emulsion in the main column (5 (2) The emulsion in (2), the main column (5), the straw (4), the plastic spring (6), the pull rod (7), the plug (71), the locking cover (8), the first one-way valve device and the second one-way valve device are respectively made of plastic materials.

2. An all-plastic emulsion pump according to claim 1, wherein: the locking cover (8) is sleeved on the outer side of the main column (5), and a waterproof sleeve (9) used for blocking a gap between the upper end of the locking cover (8) and the main column (5) is arranged between the locking cover (8) and the main column (5).

3. An all-plastic emulsion pump according to claim 1, wherein: the plastic spring (6) and the main column (5) are connected in a buckling manner and can prevent the plastic spring and the main column from being separated up and down.

4. An all-plastic emulsion pump according to claim 3, wherein: the upper end of the plastic spring (6) is provided with an annular buckling part (62) inserted into the main column (5) from the lower port of the main column, the outer side surface of the buckling part (62) is hermetically connected with the inner side surface of the main column (5), the communication port (61) is arranged on the plastic spring (6) and is positioned on the inner side of the buckling part (62), the outer side of the buckling part (62) protrudes with a second buckling ring (63), and the inner wall of the main column (5) is provided with a second buckling groove (51) which is concave and is buckled with the second buckling ring (63).

5. An all-plastic emulsion pump according to claim 4, wherein: the upper end of the plastic spring (6) is positioned on the outer side of the buckling part (62) and is provided with an annular end face (64) which can be in sealing fit with the lower end face of the main column (5), and when the main column (5) is pressed downwards, the lower end face of the main column (5) is pressed on the annular end face (64) and forms sealing between the two end faces.

6. An all-plastic emulsion pump according to claim 4, wherein: the lower end inner hole of the buckling part (62) and the main column (5) is circular, the second buckling ring (63) and the second buckling groove (51) are circular correspondingly, the main column (5) can rotate relative to the plastic spring (6) under the action of external force, a guide structure used for guiding the main column (5) to move up and down is arranged between the locking cover (8) and the main column (5), and the guide structure is dislocated when the main column (5) rotates relative to the locking cover (8) and prevents the main column (5) from moving up and down.

7. An all-plastic emulsion pump according to claim 1, wherein: the first one-way valve device comprises a first valve core (10), a main column outlet (52) communicated with the press head (2) is arranged in the main column (5), the first valve core (10) comprises a first outer ring (101) fixed between the press head (2) and the main column (5), a first inner core (102) which is isolated from the first outer ring (101) and covers the main column outlet (52) from one side of the press head (2) is arranged on the inner side of the first outer ring (101), and the first outer ring (101) and the first inner core (102) are elastically connected through a first rib (103) and enable the first inner core (102) to float upwards when the bottom of the first inner core is pressed so as to open the main column outlet (52).

8. An all-plastic emulsion pump according to any one of claims 1 to 7, wherein: be equipped with sealing connection between plastic spring (6) and body (1) seal receptacle (70) of the two, pull rod (7) lower extreme is fixed on seal receptacle (70), the bottom of seal receptacle (70) is equipped with end chamber (701), be equipped with through-hole (702) that communicate plastic spring (6) and end chamber (701) on seal receptacle (70), end chamber (701) are linked together with entry (11) of body.

9. An all-plastic emulsion pump according to claim 8, wherein: the second one-way valve device comprises a second valve core (20), the second valve core (20) is located in a bottom cavity (701), the second valve core (20) comprises a second outer ring (201) fixed between a sealing seat (70) and the body (1), a second inner core (202) which is isolated from the second outer ring (201) and covers the inlet (11) of the body from one side of the bottom cavity (701) is arranged on the inner side of the second outer ring (201), and the second outer ring (201) and the second inner core (202) are elastically connected through a second rib (203) and enable the second inner core (202) to float upwards when the bottom of the second inner core is pressed so as to open the inlet (11) of the body.

10. An all-plastic emulsion pump according to claim 8, wherein: the locking cover (8) is positioned above the plastic spring (6), and when the plastic spring (6) bounces, the plastic spring (6) is blocked from the upper side and the maximum height of the plastic spring (6) in a bouncing way is limited, the plastic spring (6) is in a compressed state when being bounced and pressed on the lock cover (8), the lower end of the plastic spring (6) is pressed against the sealing seat (70) and presses the sealing seat (70) against the bottom of the inner cavity of the body (1), a sealing groove (703) for inserting the lower end of the plastic spring (6) is arranged on the sealing seat (70), the lower end surface of the plastic spring (6) is pressed on the groove bottom of the sealing groove (703) and is in sealing joint with the groove bottom of the sealing groove (703), under the elastic pressure of the plastic spring (6), the bottom surface of the sealing seat (70) is tightly attached to the bottom of the inner cavity of the body (1) and forms sealing between the bottom surface of the sealing seat (70) and the bottom of the inner cavity of the body (1).